Brush



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BRUSH.

APPLICATION FILED IuIIE Is, 1920.

19391 yg, v Patentedspt 27, 1921.

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INVENTOR UNITED STATES PATENT OFFICE.

JOHN DWORNICZAK, OF CHESTER, PENNSYLVANIA.

BRUSH.

Application filed .Tune 18,

To all 'whom it `may concern f Be it known that I, JOHN DWORNICZAK, acitizen of Republic of Poland, residing at Chester. in the county ofDelaware and State of Pennsylvania. have invented new and usefulImprovements in Brushes` of which the following is a specification.

The invention relates to brushing and scrubbing and has for an object toprovide a brush `for cleaning or polishing purposes. rl`he inventioncomprehends among other features a brush which is preferably motordriven and which ma)Y be constructed to provide a'suitable head havingbristles, the head being removable from the body for the purpose ofreplacing a worn out brush with a new one. c

In' the further disclosure of the invention reference is to he had tothe accompanying drawings constituting a part of this specification, inwhich similar characters of reference denote corresponding parts in allthe views` and in which,-

Figure 1 is an elevation of the brush.

Fig. 2 is a fragmentary "ertical sectional view taken through the brushhead showing the manner of connecting the same to the shaft of themotor.

Fig. 3 is a view looking at the face of the brush, and

Fig. 4 vis a view looking at the face of the head.

Referring more particularly to the views the numeral 10 indicates anelectric motor having a suitable handle 11, the motor being adapted forconnection with a suitable source of electric energy whereby the usual gmotor shaft 12 can be rapidly rotated. The

shaft 12 has its projecting end 13 threaded and furthermore includes anannular stop flange 14. The brush comprises the bristles 15 projectingfrom the brush head 16, which is preferably a two-part construction,consisting of the sections 17 and 18, the former carrying the bristles15. rlllhe section 18`is in the nature of a .cover and is providedcentrally with a squared opening 19, the section being suitably-fittedinto a countersunk recess 20 in the section 17 which also has a squaredopening 21 alining with the opening 19.. A

A coupling plate 22 is provided, the same having a squared head 23fitting the squared openings 19, 21, and through which plateSpecification of Letters Patent. Patented Sept. 27, 1921.

1920. Serial No. 389,931.

22 pass suitable screws 25 extending through the sections 1T, 18. tosecure the coupling to the brush body. the squared head 23 having athreaded central bore 21 receiving the threaded end 13 of the motorshaft 12 with the coupling adapted to bear against the flange 11 so asto limit. the screwing of the couplinO onto the threaded part ofthemotor shaf From the foregoing description it will be seen' that whenthe bristles 15 of the brush wear out the brush in its entirety can beremoved from the motor shaft fand then by removing the screws 25,thecoupling and -section 18 can be removed to providenccess to thebristles where they are fixed into `the part 1T, the screws 25 servingto secure the coupling to the brush body and also securing the section18 to the section 1T. It will be `noteqd that the brush in its entiretycomprises substantially the connectible sections 17, 18, together withthe bristles -15 on the section 1.7, and also the coupling, and that asa unit in its make-up the brush structure can be applied to any desiredform of motor or other shaft provided it can be suitablv attached orthreaded thereto.

aving described my invention, I claim- The combination with a rotatableshaft having a threaded end, of a brush including two disk-like membersof relatively different thicknesses, both of said members having alinedsquared openings, one' of said meinbers having a plurality of apertures,bristles threaded through the apertures and projecting from one side ofthe member, the opposite side or face of said` member belng recessed andproviding an annular shoulder, the other ,part of said head'reposinguponsaid shoulder. a flange projecting from the confronting face of thelatter mentioned member inwardly of the peripheral edge, and arranged toengage said shoulder, a coupling plate reposing upon the lattermentioned memben fastening elements passed through said plate and therespective parts of the head of the brush, whereby all of said parts areheld operatively associated, .a threaded boss projecting centrally fromsald plate and received bythe aforementloned squared openings, and said,boss being threaded on the threaded ,end of the shaft. In testimonywhereof Ialx my signature.

` JOHN DWQRNICZAK.

